Solar transit.



P. FERBER. SOLAR TRANS/1T APPLICATION FILED MAY 22, 1909.

955,392. Patented Apr. 19, 1910. 4 sums-sum 1.

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1' W Inventor:

' N JREW a GRAHAM co. PHOTU-LITHQGRAPREPS, WASHINGTON. D. c.

P. PERBER.

SOLAR TRANSIT.

APPLICATION FILED MAY 22, 1909.

4 SREET8-BHEET 2.

@SW/ Inventor by R M Art}.

ANDREW a GRLNAM c0. PHOTO-LKINOGRAFHERS. WASHINGTON n0 Patented Apr. 19,1910.

P. PERBER.

SOLAR TRANSIT.

APPLICATION FILED MAY 22, 1909.

955 ,392. Patented Apr. 19, 1910.

4 SHEETS-SHEET 4.

UNTE STATS PATET OFFICE.

PHILIP FERBER, OF I-IOBOKEN, NEW JERSEY, ASSIGNOR TO THE KEUFFEL & ESSERCOMPANY, OF HOBOKEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SOLAR TRANSIT.

To all whom it may concern:

Be it known that I, PHILIP FERBER, a citizen of the United States, andresident of Hoboken, Hudson county, New Jersey, have invented certainnew and useful Improvements in Solar Transits, of which the following isa specification.

This invention relates to solar transits and its novelty consists in theconstruction and adaptation of the parts as will be more fullyhereinafter pointed out.

In the drawings, Figure 1 is a side elevation of an instrument embodyingmy invention; Fig. 2 is a perspective of the striding level used withboth the main telescope and the solar telescope in the device shown inFig. 1; Fig. 3 is a rear elevation of the instrument with the maintelescope removed; Fig. 4 is a top plan view of the instrument, thesleeve of the solar telescope being shown in horizontal section and theends of the main telescope being removed in order to get theillustration within the limits of the sheet; Fig. 5 is a detail of thelatitude arc frame; Fig. 6 is a longitudinal section through the sleeveof the solar telescope on the plane of the broken line 66 of Fig. 7 andFig. 7 is an end view thereof; Fig. 8 is a top plan view and partialhorizontal section of the solar telescope; Fig. 9 is an enlarged frontview of the reflector holder and shaft of the solar telescope; Fig. 10is a section through the holder, on the plane of the broken line 1010 ofFig. 9.

In the drawings, 1 is the base of an instrument of usual form andprovided with means whereby it may be mounted on a tripod or frame,leveled and circularly adjusted thereon and with a compass to determineits position. These devices are common to the art and form no part ofthe invention and they are omitted from the drawings for the sake ofclearness.

Secured to and springing upwardly from the base 1 are standards 2, 2,which are provided near their upper extremities with bearing surfacesadapted to receive the axle 3 of the main telescope and which axle isexpanded centrally into an annulus 5 of spherical exterior to serve asthe support for the main telescope 6. This latter it will be understoodis provided with the usual attachments which are omitted from thedrawing in order not to complicate it and because they form no part ofthis invention.

Specification of Letters Patent.

Application filed May 22, 1909.

Patented Apr. 19, 1910. Serial No. 497,747.

Caps 7 secured in place in any suitable manner, as by screws 8, preventany vertical displacement of the axis 3 of the main telescope 6 in itsbearings.

Adapted to closely fit over the axle 3 and intermediate the standards 2on one side and the annulus 5 is arranged a sleeve 10 (see Figs. 3, 4, 6and 7) having a conical body adapted to fit closely over the axle 3provided. near its outer end with an annular flange 11 having threadedapertures 12 adapted to receive the threaded ends of screws 13 by meansof which there is secured firmly against the annular flange 11 alatitude arc frame 14. The body is provided with a projecting end 100beyond the flange 11.

The latitude arc frame (see Fig. 5) comprises a longitudinal member 15apertured at 16 to embrace the end 100 of the sleeve 10 and providedwith holes 17 to receive the screws 13. It also has two radial members18 and 19 between which is arranged a latitude arc plate 20 suitablygraduated as indicated at 21. It is also provided with two laterallyextending collars 22 and 23, one at each end adapted to encircle andsupport a solar telescope 30. The collars are provided with means, asscrews 24, 24, by which they are tightened and their ends drawn togetherafter the solar telescope has been placed therein, and the solartelescope tube 31 is provided with annular flanges 32 and 33 whereby itslongitudinal displacement with respect to the collars is prevented.

By the described construction the solar telescope is firmly and securelymounted on the same horizontal axis as the main t/elescope and thelatitude arc frame is securely fixed in position with respect thereto.It will be noted that the latitude arc frame is placed inside of thestandards and that the collars which support the solar telescopeconstitute an integral part of such frame. By this construction acounterweight is avoided.

The axis 3 is provided with an annular flange 300 and the sleeve 10 isprovided with a similar flange 301. These flanges are identical indiameter and are adapted to re ceive the feet 302 of a striding level303 provided to be mounted thereon, and which are so spaced apart thatthey rest upon these flanges. The solar telescope 30 is provided withannular flanges 304 and 305 identical in diameter with the flanges 300and 301 on the main telescope and also spaced apart a proper distance toreceive the feet 302 of the striding level 303.

The latitude arc plate 20 is provided with a groove 26 and is adapted tobe engaged by a gripping plate 2? adj ustably secured against which isaclamp 28 provided with a screw 29 adapted to bring these together. A

, fork 290 depends from the plate 27 and between its arms is mounted aspherical nut 291 internally threaded to receive an adjusting screw 293having a knurled head 29 1 by which it may be rotated and which screwpasses through suitable bearings 295 on one of the standards 2. By meansof this device the latitude arc plate may be readily and accuratelycircularly adjusted. A vernier plate 25 is mounted between two of thestandards to cooperate with the graduations on the latitude arc.

Secured at the end of the solar telescope tube 30, or made integraltherewith, is a sub frame comprising two plates 35 and 36 suitablyapertured to receive a shaft 37 on which reflector holder 33 is mountedbetween the plates 35 and 36. The reflector 39 is fastened within theholder by a threaded cap 390 provided externally with spanner holes 391,so that it cannot be opened without the proper tool. A cork washer 392prevents any distortion of the reflector when the cap is put intoposition. A declination a'rm 393 secured to the shaft 37 and moved by a.threaded rod 39-1 having a knurled head 395 permits of an accurateadjustment of the shaft 37 and consequently of the reflector 39 withrespect to the longitudinal axis of the solar telescope. A curvedgraduated plate 390 secured to the body of the telescope 30 has abracket- 397 through which the rod 39% is adapted to pass, and a vernier398 secured to and moving with the arm permits an accurate measurementto be made of the extent of movement of the reflector.

Secured to the end of the solar telescope near its eye piece is a sleeve41-0, preferably made of aluminum, and provided with a knurled annulus4:1 by which the telescope may be manually rotated and an annularsurface 44 graduated as an hour circle. This surrounds and protects thecross hair adjusting screws indicated at 42. This sleeve is internallythreaded at 4-3 so that it may be removed for the necessary adjustmentof the screws.

What is claimed as new is 2- 1. A solar transit comprising a base,standards secured thereto, a transverse telescope axle arranged betweenthe same, and two telescopes carried by the axle between the standards,the axial line passing transversely through both telescopes.

2. In combination, a telescope axle, a

sleeve mounted to be revolved thereon, and a frame secured to the sleevefor supporting a second telescope on the same axial line.

3. In an instrument of the kind described, a main telescope axle, aframe secured thereto and carrying two rings, and a telescope adapted tobe secured in the rings so that its axis of revolution is identical withthat of the main telescope axis.

I. In an instrument of the kind described, a latitude are frame,comprising a longitudinal member, two radial members, and an arc-shapedmember supported between the two radial members, the longitudinal memberbeing provided with means whereby it may be detachably secured to atelescope axis, consisting of an aperture in the longitudinal member, asleeve adapted to fit over the telescope axis, and means for securingthe longitudinal member to the sleeve.

5. A main telescope axis, a sleeve encircling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe fitting over the tubular portion, means for securing the frameagainst the annular flange, and means for supporting a solar telescopeon the frame.

6. A main telescope axis, a sleeve encir cling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe fitting over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope and means for supportingit on the frame, comprising laterally projecting collars encircling thetube of the solar telescope.

7. A main telescope axis, a sleeve encir cling the same provided with anannular flange with a tubular portion extending beyond the flange, aframe fitting over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope, and means for supportingit on the frame comprising laterally projecting collars encircling thetube of the solar telescope, in combination with means to prevent thedisplacement of the telescope in the collars, comprising annular flangeson the telescope tube against which the collars are adapted to abut.

8. A main telescope axis, a sleeve encir cling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe fitting over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope, and means for supportingit on the frame, comprising laterally projecting collars encircling thetube of the solar telescope, in combination with means to prevent thedisplacement of the telescope in the collars, comprising annular flangeson the telescope tube against which the collars abut, and

means for tightening the collars as they encircle the tube.

9. A main telescope axis, a sleeve encircling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe fitting over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope, and means for supportingit on the frame, comprising laterally projecting collars encircling thetube of the solar telescope, in combination with means to prevent thedisplacement of the telescope in the collars, comprising annular flangeson the telescope tube against which the collars abut, and means fortightening the collars as they encircle the tube, consisting of flangeson the collars and screws to draw their ends together.

10. A main telescope axis, a sleeve encircling same provided with anannular flange and a tubular portion extending beyond the flange, aframe carrying a latitude arc, suitably graduated, and provided with anaperture to fit over the tubular portion, means for securing the frameagainst the annular flange, and means for supporting a solar telescopeon the frame.

11. A main telescope axis, a sleeve encircling same provided with anannular flange and a tubular portion extending beyond the flange, aframe carrying a latitude are, suitably graduated, and provided with anaperture to fit over the tubular portion, means for securing the frameagainst the annular flange, and means for supporting a solar telescopeon the frame, comprising laterally projecting collars encircling thetube of the solar telescope.

12. A main telescope axis, a sleeve encircling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe carrying a latitude arc, suitably graduated, and provided with anaperture to fit over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope, and means for supportingit on the frame, comprising laterally projecting collars encircling thetube of the solar telescope, in combination with means to prevent thedisplacement of the telescope in the collars, comprising annular flangeson the solar telescope tube against which the collars abut.

13. A main telescope axis, a sleeve encircling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe carrying a latitude are, suitably graduated, and provided with anaperture to fit over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope, and means for supportingit on the frame, comprising laterally projecting collars encircling thetube of the solar telescope, in combination with means to prevent thedisplacement of the telescope in the collars, comprising annular flangeson the telescope tube against which the collars abut, and means fortightening the collars as they encircle the tube.

14. A main telescope axis, a sleeve encircling the same provided with anannular flange and a tubular portion extending beyond the flange, aframe carrying a latitude are, suitably graduated, and provided with anaperture to fit over the tubular portion, means for securing the frameagainst the annular flange, a solar telescope, and means for supportingit on the frame, comprising laterally projecting collars encircling thetube of the solar telescope, in combination with means to prevent thedisplacement of the telescope in the collars, comprising annular flangeson the telescope tube against which the collars abut, and means fortightening the collars as they encircle the tube, consisting of flanges011 the collars and screws to draw their ends together.

WVitness my hand this 19th day of May 1909, at Hoboken, N. J.

PHILIP FERBER. Witnesses:

BOWDEWINE B. VAN SIoKLE, MORRIS W. LEE.

